Tension device for yarn-sizing machines.



B.'E. BYRD. TENSION DEVICE FOR YARN SIZING MACHINES.

APPUCATION FILED FEB-I1, I916- 11. ,QEQQQQ. Patented Feb. 6, 1917.

2 SHEETS-SHEET y B. E. BYRD.

TENSION DEVICE FOR YARN SIZING MACHINES.

APPLICATION FILED FEB. II, I916.

Patented Feb. 6, 1917.

2 SHEETS-SHEET 2 INVE/I/ r01? BTZ'WGW Z'flyfl BY I I ATTORNEYS 9. I m I .7///%/////////// III WITNESS BRITTON E. BYRD, OF DURHAM, NORTH CAROLINA, ASSIGNOR, BY'MESNE ASSIGN- IKEINTS, TO IJIILL DEVICES COIVIPANY, 0F LYON PARK, NEAR DURHAM, NORTH CARO- LINA, A CORPORATION 015 NORTH CAROLINA.

TENSION DEVICE FOR YARN-SIZING- IIIACHINES.

Specification of Letters Patent.

Patented Feb, 6, 1915?.

Original application fi1ed November 10, 1914:, Serial No. 871,318. Divided and this application filed February To allwhom it may concern:

Be it known that I, BnrrroN E. Brno, re-

siding at Durham, in the county of Durham and State of North Carolina, have in vented certain new and useful Improvements in Tension Devices for Yarn-Sizing Machines, of which the following is a specification.

This invention has reference to machines for slashing and sizing yarns or threads prior to the use of the same in a loom, and in the practical operation of which the threads or yarn are drawn from the thread beams at one end of the machine, caused to travel into and through the sizing substance, thence to means that removes or squeezes the superfluous sizing substance from the said threads, and thence caused to travel over drying means and finally passes along to and taken up by the loom beam.

In the use of machines of the general character stated, usually when the machine is stopped, that is the passing of the thread from the thread beams to the take-up or loom beam-is arrested, if but for a very short time, those portions of the yarn or threads in the act of sizing and which have not been passed through the squeezing rolls, become hardened and injured, by reason of the sizing material drying thereon and hence before the machine can be again started, to effect the desired sizing operation, all of the yarn between the sizing means and the take-up or loom beams must be cut out and removed, causing, as it were, thetotal loss of such lengths of the yarn, and also much loss of time on the part of theattendant.

My present invention, which is a divisional part of my invention disclosed in my co-pending application Serial No. 871,318, filed Nov. 10, 1914, primarily has for its object to provide certain improvements in machines of the type referred to inawhich the stopping of the machine for any length of time prior .to the filling of the loom beam with the sized yarn does not necessitate the cutting out of any portion of the yarn and by which, in case of stoppage of the machine, the yarn or threads can be so manipulated that danger of the sizing material hardening on the threads is entirely overcome and the said threads thereby held in readiness when again starting the ma- Serial No. 77,601.

chine for a proper passage through the sizing material, the squeezing means, the drying devices and to the take-up or loom beam.

l/Vith other objects in view, that will hereinafter appear, my present invention particularly has reference to the tension devices generally described and shown in my aforesaid co-pending application, and my said invention embodies the peculiar features of construction and'novel arrangement of the parts that constitute my improved yarn sizing machine, all of which will be hereinafter first described in detail, then be specifically pointed out in the appended claims and illustrated in the accompanying drawings in which: Figure 1 is a side elevation of a yarn sizng or slashing machine that embodies my improvements.

Fig. 2 is a perspective view of that end of the machine in which is mounted the loom beam and the tension devices hereinafter specifically referred to.

Fig. 3 is a side elevation, parts being in section and showing the tension device adjusted for applying the desired tension to the sized threads, as they travel toward the take-up or loom beam.

Fig. i is a similar view, the parts being shown under another adjustment Referring now more particularly to Fig. 1 of the drawings, 1 designates the main frame of the machine, 2 the usual kettle or tank in which is contained the starch or sizing substance and located at one end of the framing.

' 33 designate the lower squeeze rollers journaled in the side beams of the main frame above the tank 2 and with which cooperate the upper squeeze rollers 41:, which, when the machine is in operation, engage the rollers 3 and which are removably mounted in the slotted bearings 5 on the sides of the frame 1, the bearings opening upwardly so as to permit the squeeze rollers to be unshipped therefrom. To provide for supporting the upper squeeze rollers 4: when removed from their bearings 55, other slotted bearings 66 are mounted on the frame adjacent the bearings 55 and they designates the usual main drying cylinder mounted on the frame 1 and 11 designates-a smaller drying cylinder located between the tank 2 and the large cylinder 10.

5 V9 designates a direction or guide roller mounted on the rear end of the machine over the inlet edge of the tank 2 and 7 denotes a slashing or sizing roll, whose journals are mounted in grooves 8 in the vertical mem- 0 bers 8 of the frame 1, so that the said roll may be lowered to cause the yarns to be sized to run through the sizing material in the tank 2 during the operation of sizing and when elevated to permit the said yarns to be run without coming in contact with sizing material.

131 115 designate the yarn beams mounted on a frame 31 suitably located with reference to the tank 2 and from which the 2s yarns, indicated by a on Fig. 1, pass to the sizing tank.

The several parts of the sizing machine I shown in the drawings, so far described, are of a well-known construction, and per se,

they form no part of my invention, since my said invention is especially confined to the yarn take-up, and the means for maintaining the yarn thread in a taut or straight line in its passage from the squeeze rolls to the larger or main drying drum, and which I shall now proceed to describe.

A pairof vertically disposed standards are secured to opposite sides of the frame 1 at a point between the sizing tank and the drying cylinder12 and each of such standards includes a lower or fixed member 32 and an upper member 32 supported by and having vertical adjustment in the fixedly held members 32.

39 is a rocker arm which is pivoted at 35 and carries rollers (not shown) over which the thread 64 passes for take-up purposes.

14 designates the loom, beam that is removably mounted in bearings at the front end of the machine and upon which the sized yarn is wound.

The tension devices in my complete construction of yarn sizing machine, and which are best shown in Figs. 3 and at of the drawing, consist of a pair of horizontally disposed friction rollers 50 located one at each side of a. roller 16, which is of larger diameter than the rollers 50 and located below the same, and the said roller 16 has bearings in the main frame of the machine.

Rollers 50-50 are loosely supported at their ends above hanger bars 51-51,.adjustably mounted on the lower ends of hanger arms 5252, the upper ends of which are pivotally hung on stud bearings 53 that project laterally from a lever member 51 that has other lateral studs 55 for adjustably seating in any set of a series of a set of bearings 56 in the upper edges of a housing 57 removably mounted on the main frame of the machine and includingan ads justable clamping device 58, the latter being understood by reference to Fig. & that 7 when the lever 51 is swung over to the position shown, the pivotal connections for the hanger arms are beyond the'lineof center of the pivotal bearing for the lever 51.

From the foregoing taken in connection with the drawings, the complete construe tion and the advantages of my invention will be readily apparent.

In operation of slashing; or sizing the threads, and assuming the drying cylinders to be revolving in the direction indicated by 2:

the arrows, the warp threads are drawn from the beams and caused to travel over the guide roller 9, under the sizing roller '7,and

the said roller 7, being now at its lower position causes the threads to contact with the sizing material in the tank 2, from which point the yarn threads pass between the upper and lower squeeze rollers 3 and 4, which serve to remove the superfluous sizing material or starch from the yarns, the sized i yarns being dried as they pass over the cyl-- inders 10-11, from' which they pass over guide rollers 61-62, to the tension devices and thence to the loom beam, reaching the latter in a dry condition suitable for use in the loom.

After the slack in the yarns has been taken up, the operator unships the upper squeeze rollers from the bearings 5 and places them in bearings 6 to thereby entirely remove the yarn from contact with the low r squeezing rollers. After the rollers have been thus placed, the operator swings the lever of the tension devices to the position shown in Fig. 9, which drops the rollers at each side of the roller 16 and thus relieves the tension on the yarn. V

The operator then turns the yarn carrying beams at the tank end and winds the yarn back again until the desired portions to be sized are positioned for being advanced to and through the sizing material;

\Vhat I claim is 1. In a. yarn sizing machine of the char-' acter described, the combination withguides for the sized yarn and the loom beam on which the yarn is wound; of a tension device 7 for the yarn located between the said guides and the loom beam, the said device including a pair of transverse tension rollers,

slotted guides on the opposite sides of the machine frame in which the ends of the said tension rollers are guided, a stationary roller located below and between the pair of tension rollers, under which pass the yarns that extend over the pairs of tension rollers, a lifter device for each end of the pairs of trunnion rollers, each of the said lifter devices including a lever pivotally connected with each lifter device and fulcrumed on fixed bearings on the opposite side frames, the fulcrum ends of the levers and their respective lifter devices having interlocking portions for holding the said lifter devices and the movable tension rollers to the elevated position.

2. A tension means for yarn sizing machines, of the character stated, comprising in combination with opposite side portions of the main frame of the machine; a fixedly held transverse guide roller under which the yarns pass, a pair of loosely held transverse tension rollers, one at each side of the fixed roller, and over which the yarns pass, a lifter device for each end of the pair'of transverse tension rollers, said lifter devices each including a cross bar that extends under the transverse tension rollers, and an upright arm, said arms being pivotally connected at their lower ends with their respective cross bars, each of said arms having a lock notch in one edge, a lever for each of the lifter arms, each of said levers being fulcrumed at the lower end and provided with a lug that forms the pivotal connection for the upper end of the lifter arms, said levers also each having a lateral lug for interlocking with the notches in their respective lifter arms when said arms and the tension rollers are elevated to apply tension to the yarns. v

3. In a machine of the character described, the combination with the opposite portions of the main frame; of a tension means for the yarn comprising a pair of oppositely disposed housings, adjustable clamping means cooperating therewith for securing the same to the side portions of the main frame, a main tension roller that extends transversely between and is journaled in the side portions of the framing under which the yarns or threads pass, a hanger pivotally supported on each housing, a lifter bar adjustably connected to the lower end of each of the said hangers, a pair of transverse tension rollers whose ends are loosely supported upon the oppositely disposed lifter bars, the said rollers being located above and one at each side of the fixedly held roller, a lever device cooperating with each hanger for raising it and the lifter bar, and means cooperating with each lever for looking it when shifted to raise the hanger.

i. In a machine of the character de scribed, the combination with the opposite portions of the main frame; of a tension means for the yarn that consists of a pair of oppositely disposed housings, adjustable clamping means cooperating therewith for securing the said housings to the side portions of the main frame, a main tension roller that extends transversely between and is journaled in the side portions of the framing under which the yarns pass, a hanger arm supported on each housing, a lifter bar adjustably connected to the lower end of each of the hanger arms, a pair of transverse tension rollers whose ends are loosely supported upon the oppositely disposed lifter bars, said rollers being located above and one to each side of the fixedly held roller, a lever device adjustably mounted one on each housing on the opposite sides of the main frame, said lever devices cooperating with their respective hanger arms for raising such arms and the lifter bar, and means for interlocking the said levers and their respective hanger arms when the latter are raised to hold the loosely mounted tension rollers at their elevated position.

BRITTON E. BYRD.

Copies of this patent may be obtained for five cents each, by addressing; the Commissioner of Patents,

Washington, D. G. 

